Detailed Product Description

Designation: 6212 M/C4VL0241 Coating: Aluminium Oxide Coating
Electrical Resistance: Voltages Up To 3000 V DC Cage: Brass
Cleance: C4 Dimension: 60×96×18 mm
Weight: 0.5 kg Application: Electric Traction Motors

Electric Insulated Deep Groove Ball Bearing 6212 M/C4VL0241 provide a bearing function and electrical insulation, virtually eliminates premature bearing failure caused by stray electric currents, electrical insulated bearing can reduce the number of failures and improve the machine uptime, reduce the cost of maintenance.

CoatMaster provides electrically insulated bearings 6212 M/C4VL0241, especially to replace INSOCOAT, to protect against damages caused by electric currents. These bearings have an electrically insulating coating on the outer ring (VL0241 execution), or on the inner ring (VL2071 execution). The inner ring coating can be made from bore diameters above and including 70 mm. The coating consists of a nominal 100-µm thick aluminium oxide layer and is applied by a unique coating process using plasma-spraying technology.

Features and Benefits of CoatMaster Electrically Insulated rolling Bearings

VL0241 : electrically insulating outer ring

  • Perfect used for small and medium traction motors
  • Its design is based on cylindrical roller bearings and deep groove ball bearings.
  • Outer ring is electrically insulated by alumina coating
  • Basic elimination of premature bearing failure due to stray currents

VL2071: electrically insulating inner ring

  • Perfect used for larger traction motors
  • Alumina coating applied to the outer surface of the inner ring: holes, chamfers and end faces
  • Improved electrical insulation characteristics compared to coated outer ring design VL0241
  • Reduced capacitance due to the small surface area of the coating

• Increased electrical impedance
Electrically insulated Rolling Bearings 6212 M/C4VL0241
Principal dimensions 60×110×22mm
Weight: 1 kg
Basic dynamic load rating-C: 55.3kN
Basic static load rating-Co: 36kN
Fatigue load limit-Pu: 1.53 kN
Reference speed: 13000 r/min
Limiting speed: 11000 r/min
Electrically Insulated Rolling Bearing as a Preventive Measure

Electric motors, generators and associated equipment are at risk when an electric current passes through their bearings. This can damage the contact surfaces of rolling elements and raceways in the bearings (electrical erosion) and rapidly degrade the grease. An additional risk in electric motors and generators comes from high frequency currents caused by the inherent stray capacitance. The risk of damage increases where the application uses a frequency converter.

The Electrically Insulated Bearing 6212 M/C4VL0241 adopts the special spraying process, spraying the high quality coating on the outer surface of the bearing, Strong adhesion between film and substrate, Good insulation performance, avoiding the electric corrosion effect of the induced current on the bearing, Prevent current from damage for grease, rolling elements and raceways, Improve the service life of bearings . The process is constantly being improved. Among Electrically Insulated Bearing, there is a 100 μm thick coating on the outer or inner ring surface that can withstand voltages up to 1000 V DC. Special spraying process can form a layer with uniform thickness and strong adhesion , After further processing, it can be protected from moisture and humidity.

XRB is the China bearing exporter & supplier, it can supply 6212 M/C4VL0241 bearing, Our large quantity insulated deep groove ball bearing Stock can meet your need with good quality and fast delivery, Also you can find FAG 6212-M-J20AA-C4 Bearing, the other type and brand insulated deep groove ball bearing, insocoat tapered roller bearing, Current-Insulated Bearings.